Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1991-11-12
1993-11-09
Perkey, W. B.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358209, 358906, G03B 1505, H04N 530
Patent
active
052607380
ABSTRACT:
A still camera having at least one motor or a recording circuit, in addition to a flash device. The flash device includes a charging circuit for accumulating charge. The charging circuit can carry out a charging operation while the motor or the recording circuit is actuated but the charging current is reduced to some extent, so as not to demand an excessive current from a battery power supply and to prevent excessive audible oscillator noise, while minimizing the total charging period. The invention is particularly advantageous in electronic still cameras.
REFERENCES:
patent: 4561754 (1985-12-01), Matsuyama
patent: 4608605 (1986-08-01), Okino
patent: 4755885 (1988-07-01), Okino et al.
patent: 4908552 (1990-03-01), Kumakura
patent: 5113210 (1992-05-01), Kashiyama et al.
Japanese Patent Abstract, vol. 14, No. 207 (P-1043), published Apr. 26, 1990.
Japanese Patent Abstract, vol. 012, No. 413 (P-780), published Nov. 2, 1988.
"Still video still here?", Electronics World+Wireless World, vol. 96, No. 1656, Sutton , G. B., pp. 873-876 (Oct. 1990).
Takahashi Hirokazu
Yamagishi Yoichi
Canon Kabushiki Kaisha
Perkey W. B.
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